Kubernetes存储类（StorageClass）部署指南

概述

StorageClass 为管理员提供了描述存储“类”的方法。不同类型的存储类可能会映射到不同的服务质量等级或备份策略，或者由集群管理员制定的任意策略。每个 StorageClass 包含 provisioner、parameters 和 reclaimPolicy 字段，这些字段会在动态分配 PersistentVolume 时使用到。

StorageClass 命名

StorageClass 对象的命名很重要，用户使用这个命名来请求生成一个特定的类。当创建 StorageClass 对象时，管理员设置 StorageClass 对象的命名和其他参数，一旦创建后不能再对其进行更新。

以 NFS 服务为例

安装 NFS 服务

# 安装 NFS 服务并启动
yum -y install nfs-common nfs-utils
systemctl start nfs && systemctl enable nfs
systemctl start rpcbind && systemctl enable rpcbind

创建共享目录

mkdir -p /data/nfsprovisioner
chmod 777 /data/nfsprovisioner
chown nfsnobody /data/nfsprovisioner

修改 exports 文件

cat > /etc/exports << EOF
# 将共享目录添加到 exports 文件中
/data/nfsprovisioner *(rw,async)
EOF

部署 NFS 客户端 provisioner

修改配置参数

# 修改对应的 NFS 地址和目录

部署 YAML 文件

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-nfs-storage
provisioner: fuseim.pri/ifs  # 或其他名称，需与部署的环境相关联
parameters:
  archiveOnDelete: "false"
# 例：服务账号配置
apiVersion: v1
kind: ServiceAccount
metadata:
  name: nfs-client-provisioner
  namespace: default
# 例：角色配置
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: nfs-client-provisioner-runner
rules:
  - apiGroups: [""]
    resources: ["persistentvolumes"]
    verbs: ["get", "list", "watch", "create", "delete"]
  - apiGroups: [""]
    resources: ["persistentvolumeclaims"]
    verbs: ["get", "list", "watch", "update"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["storageclasses"]
    verbs: ["get", "list", "watch"]
  - apiGroups: [""]
    resources: ["events"]
    verbs: ["create", "update", "patch"]
# 例：角色绑定
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: run-nfs-client-provisioner
subjects:
  - kind: ServiceAccount
    name: nfs-client-provisioner
    namespace: default
roleRef:
  kind: ClusterRole
  name: nfs-client-provisioner-runner
  apiGroup: rbac.authorization.k8s.io
# 例：角色配置
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: leader-locking-nfs-client-provisioner
  namespace: default
rules:
  - apiGroups: [""]
    resources: ["endpoints"]
    verbs: ["get", "list", "watch", "create", "update", "patch"]
# 例：角色绑定
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: leader-locking-nfs-client-provisioner
  namespace: default
subjects:
  - kind: ServiceAccount
    name: nfs-client-provisioner
    namespace: default
roleRef:
  kind: Role
  name: leader-locking-nfs-client-provisioner
  apiGroup: rbac.authorization.k8s.io
# 例：部署配置
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-client-provisioner
  labels:
    app: nfs-client-provisioner
  namespace: default
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: nfs-client-provisioner
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    spec:
      serviceAccountName: nfs-client-provisioner
      containers:
        - name: nfs-client-provisioner
          image: registry.cn-shanghai.aliyuncs.com/leozhanggg/storage/nfs-client-provisioner:latest
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: fuseim.pri/ifs
            - name: NFS_SERVER
              value: 服务器IP地址
            - name: NFS_PATH
              value: /data/nfsprovisioner
      volumes:
        - name: nfs-client-root
          nfs:
            server: 服务器IP地址
            path: /data/nfsprovisioner

测试部署

创建 PersistentVolumeClaim

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: test-claim
annotations:
  volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Mi

创建测试 Pod

apiVersion: v1
kind: Pod
metadata:
  name: test-pod
spec:
  containers:
  - name: test-pod
    image: busybox
    command:
      - "/bin/sh"
    args:
      - "-c"
      - "touch /mnt/SUCCESS && exit 0 || exit 1"
    volumeMounts:
    - name: nfs-pvc
      mountPath: "/mnt"
  restartPolicy: "Never"
  volumes:
    - name: nfs-pvc
      persistentVolumeClaim:
        claimName: test-claim

命令示例

# 部署配置
kubectl apply -f nfs-client-provisioner.yaml
# 检查 Pod 状态
kubectl get pod | grep nfs-client-provisioner

资源清理

# 删除测试 Pod
kubectl delete -f /root/test-pod.yaml
# 删除 PersistentVolumeClaim
kubectl delete persistentvolumeclaim "test-claim"

注意事项

请根据实际环境调整 NFS 服务器地址和共享目录路径。部署完成后，可以通过 kubectl get pod 检查 NFS 客户端 Provisioner 的运行状态。

转载地址：http://zknyz.baihongyu.com/

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